Fastener setting attachment



Dec. 21, 1954 E. M. BRAYTON FASTENER SETTING ATTACHMENT 5 Sheets-Sheet l Filed nec. 22, '1952 Dec. 21, 1954 E M BRAYTON 2,697,221

FASTENER SETTING ATTACHMENT Filed Dec. 22, 1952 3 Sheets-Sheet 2 11 113-- unuunnlnnuu Dec. 21, 1954 E. M. BRAYTON 2,697,221

FASTENER SETTING ATTACHMENT Filed nec. 22, 1952 3 Sheets-Sheet 3 nventors 24g/ey ff. 6,9/1 V70/V United States Patent Office 2,697,221 Patented Dec. 21, 1954 2,697,221 FASTENER SETTING ATTACHMENT Ellery M. lrayton, Southington, Conn., assignor, by

mesne assignments, to Hook-Flex Corporation, Chicago, Ill., a corporation of Illinois Application December 22, 1952, Sen'al No. 327,178 7 Claims. (Cl. 1-76) This invention relates to the setting of staple type ttmgs such as hook and eye fastening devices and the like for clothing and other objects and materials, and to the attachment or setting of such fittings thereon or therein accurately in predetermined locations and manner.

It is an object of this invention to provide such iinproved ttings or fastening devices and methods and apparatus for effectively, conveniently and economically setting them in such manner as, for instance, to prevent occurrence of damage to supporting clothing or securlty of attachment of the fittings thereto, by subjection of supporting clothing structure such as garment ilies or plackets to traverse stresses and strains incident to long wear and rough usage.

It is a further object of this invention to provide such new .and improved fittings or fasteners which comprise a palr of members, of which one is provided with cloth or garment material penetrating prong, projection, or tine means extending also through suitable apertures into clinched and partially recessed relationship with a stay or backing plate member or plate having lug and prong receiving recess forming means adjacent to and associated with the prong receiving apertures to coopcrate with complementary means of the prong or tine carrying member and with clothing or other supporting material clampingly to compress the material therebe-` tween in stress and strain distributing manner to prevent loosening of the fitting or fastener and/or damage to the clothing or other supporting material during rough and protracted use, and new and improved methods and apparatus for effecting the aforesaid setting or attachment.

It is a further object of this invention to provide new improved methods and apparatus for effecting bending of the prongs, tines or projections of such fittings or fasunder compression, into sharp tening devices tightly, precise and exact right angles in order that the bent-over portions thereof shall lie flat and closely engage the stay or backing plate surfaces, which are preferably recessed forwardly of the plate or general extent of the aforesaid stay or backing plate, for tightness and security of connection and neatness and compactness in the attached and set unit.

It is a further object of this invention to provide such methods and apparatus which are particularly adapted to the attachment and/or setting vices or units to clothing and especially of so-called hook and eye fastener units to the ily and placket closures and closure portions of garments provided with slide fasteners or zippers It is a still further object of this invention to provide such apparatus in the form of attachments for commercial presses, either of the manual, hand or foot operated type or of the hand or foot controlled power presses of well-known type and which apparatus is of simple construction, readily and conveniently attachable to commercial presses of widely varying types, requiring but slight skill and/or aptitude for eiiicient operation, and readily adjustable for widely varying fastener types and garment constructions, models, sizes, etc.

Further objects of this invention are to provide in such apparatus, yieldingly supported transparent or semitransparent gauge means cooperating with the slide fasteners or zippers, or other portions or attachments of of such fastening de-I affording full or substantial vision of the appropriate garment portions throughout the fastener unit setting operation, which gauge means are provided with suitable indicia, and supported by readily adjustable and attachable spring hinge members normally supporting the gauge means in upraised positions facilitating location of the garment portions therebeneath, and subsequent positive engagement of the gauge means with the slide fastener or other parts or portions of the garment closure portions.

These and other objects and advantages of the invention will appear from the following description taken with the drawing, forming a part thereof, and will be pointed out in the appended claims.

Referring to the drawing wherein I have illustrated certain preferred embodiments of my invention:

Fig. 1 is a fragmentary perspective front view of a typical trouser garment equipped with a hook and eye assembly according to this invention;

Fig. 2 is an enlarged exploded isometric view of a preferred form of hook unit of the hook and eye assembly of Fig. 1, according to this invention, before attachment or setting;

Fig. 3 is a side view, in elevation, ed for attachment to a conventional reciprocating press according to this invention, the press structure, with the exception of the power head or plunger, which supports the hook carrying upper die, being omitted in the interest of clear disclosure and the gauge being shown in operation on a conventional garment ily portion, with its normal inoperative position of the gauge indicated in dot and dash lines;

Fig. 4 is an enlarged side elevation of the hookl carrying upper die member shown in Fig. 3;

Fig, 5 is a bottom plan View, partly in section, of the structure shown in Fig. 4;

Fig. 6 is a top plan view of the structure shown in Fig. 3, with the top die member and press plunger omitted, and before the hook has been set;

Fig. 7 is a fragmentary top plan view of the structure shown in Fig. 3 as seen beneath the upper hook carrying die and gauge and showing a backing plate or member seated in the lower or setting die prior to descent of the press plunger and hook carrying upper die for a setting operation;

Fig. 8 is a view similar to Fig. 7 but with the backing plate or member omitted for clearness of disclosure:

Fig. 9 is an elevation, in section` taken substantially along the plane indicated by the lines 9-9 in Figs. 8 and 11' Fig. al() is a fragmentary elevation, in section, taken substantially along the plane indicated by the lines lll-1t) in Figs. 8 and ll;

Fig. ll is an isometric View of the lower. prong clinching and setting, die unit or assembly shown in Figs. 7 to l0 inclusive;

Fig. l2 is an enlarged fragmentary section, m elevation, similar to Fig. l0 and taken substantially along the plane indicated by the lines 10-10 in Figs. 8 and l1 but showing the parts in position wherein the press plunger and upper or hook carrying die member have descended to cause penetration of the garment material bv the prongs of the hook which have passed through the aligned piercof apparatus adaptings or apertures in the backing plate or member, before they have been clinched for secure connection of the hook and backing plate members to form the hook un1t or assembly fixedly attached to the garment as shown in Fig. 1;

Fig. 13 is a view similar to Fig. 12 but showing a -subsequent and nal position of parts wherein the prongs 15-15 in Fig. 13 with the dies omitted;

Fig. 16 is an enlarged isometric view of a preferred modified form of hook member, according to this invention; and

Fig. 17 is a similar view of a modified form of backing plate or member embodying the principles of this invention and conplementary with the modified form of hook member shown in Fig. 16.

A hook and eye fastener including the hook-stay assembly or hook unit of this invention as a part is shown in Fig. 1 in a typical trouser garment application or installation although it is understood, of course, that it may be used in skirts, other garments, and articles of widely varying types. In the garment construction shown, the right-hand flap portion 21 supports an attached eye unit generally designated 23 which is cemplementary with the hook-stay assembly or hook unit generally designated 24 attached to the left garment flap portion 22 in a location, in a manner, and by apparatus hereinafter described.

In Fig. 2. the details of one illustrative preferred form of hook unit 24 is shown which is substantially as described and illustrated in application for U. S. Letters Patent, Serial No. 284,858, tiled April 29, 1952 by Louis Markin and entitled Hook-Stay Assembly foi' Fabric Fastenings.

The hook-stay assembly or hook unit 24 shown in Fig. 2 comprises a hook member 25 and complementary stay or backing plate 32. The hook member 25 is formed by a'plate-like base portion 26 connected with an integral, spaced and forwardly inclined angularly disposed bill portion 28 by an arcuate or bend portion 27 to form a space or clearance between the portions 26 and 28 adapted detachably to receive the bar portion of the eye unit 23 in known manner. At the end opposite the arcuate or bend portion 27, the plate-like base portion 26 terminates in an ear or lip portion 29 rearwardly in* clined, at a slight angle, from the base portion 26 and disposed between a pair of similar prong members 3i) extending rearwardly from the base portion at a substantial right angle. These prong members are suitably pointed at their outer ends for ready penetration of garment material or the like to which the unit 25, 32 is to be atached as, and for a purpose, which will appear hereina ter.

The complementary stay or backing plate 32 is of plate-like or substantially planar form and of configurations or outline generally resembling that of the bill portion 28 of the hook member 25. It is preferably somewhat larger, however. in order that it may extend beyond the material underlying the hook member 25 at the opposite side of the garment material or the like, as shown in Fig. 14, to provide rm anchorage of the hook member 25 to the garment flap portion 22 as shown in Figs. l, 6 and 12-15.

The stay or backing plate 32 is provided with a pair of piercings or apertures 33 aligned with the prongs 30 of the hook member 25, which apertures or piercings are preferably rectangular as shown and through which the prongs 311 pass after piercing the garment material or the like as shown in Figs. 12-15.

Extending from one edge of each aperture or piercing 33 is a forwardly embossed portion forming a recess 34 to receive and house the bent-over or clinched end portions 30b of a prong 30 as shown in Figs. 12-15 in order that the unit 24 (or 25, 32) shall have ultimate achievable compactness and a flat rear surface.

Extending from the opposite edge of each aperture 33 toward the recess 34 is a fabric compressing and prong locking lug 35 which, in addition to firmly locking the bent prong 30 when set, exerts pressure forwardly upon the overlying fabric in opposition to the rearward pressure exerted by the ear or lip portion 29. This opposed forwardly and rearwardly exerted pressure effects substantal compression upon the fabric clamped between members 25 and 32 to distribute over large areas crosswise stresses and strains exerted upon the hook unit 24 in use and reduces to the remotest minimum all likelihood of slippage or cutting or other fabric damage in continued rough use or misuse.

As shown in Figs. 3 and 12-15, the hook member 25 is supported for vertical reciprocatory movement in alignment with the stay or backing plate 32 and the garment or other material is located as desired (as and by means hereinafter described) whereupon the hook member is thrust or driven downwardly. During the downward thrust of the hook member 25 its prongs 30 penetrate the material and then pass through the piercings or apertures 33 and are bent or clinched and locked by simultaneous application of compound clamping stress between members 25 and'32 as a whole, bending into recesses 34 and locking of the prongs 30 by locking lugs 35 which also cooperate with the ear or lip portion 29, all as may be readily understood by comparison of Figs. 12 and 13.

The modified hook unit 24a (or 25a, 32a) shown in Figs. 16 and 17 is generally similar to the above described form of hook unit 24 and embodies the above described principles and advantages but, in addition, is adapted for extreme heavy duty, especially such as work clothing, etc. In order to adapt this modified form of hook unit especially to withstand such use and incidental misuse, the stay or backing plate 32a is provided with an additional piercing or aperture 36 and the hook member 25a with an additional aligned prong 31 adapted to have its end portion bent over or clinched into the additional recess 37 extending from the piercing or aperture 36 1 n a direction opposite the extent of the prong end portions 3012 (Figs. 13 and 14). The prongs 30, 31, 30 and piercings or apertures 33, 36, 33 are preferably arranged out of alignment or, as at the apices of a triangle of maximum permissible area, so that the three point connection provided between the members 25a and 32a exerts maximum resistance to bending and/ or peeling or separation of the members 25a and 32a under the most extreme misuse and unusual stresses which may be encountered.

A preferred, illustrative, embodiment of my new andk improved means for locating and setting or attaching the hook-stay assemblies or hook units 24 comprising hook members 25 and complementary backing plates 32 accurately in predetermined location on a trouser garment ap portion such as 22 (Fig. l) comprises the simple, efficient press attachment shown in Figs. 3 and 6 which is readily and conveniently attachable to conventional presses of widely varying types. The attachment includes a bottom die assembly generally designated 40 adaptable to rest upon the base or table 38 (Fig. 3) of a conventional manually controlled or operated, power or foot press, or the like (not shown) having a vertically reciprocatory plunger 39 to which is attached the upper, hook member carrying die 41 shown in detail in Figs. 4 and 5. The lower die assembly 40 is retained in position, as hereafter described, by its attachment to a work (i. e. garment material) supporting plate 42 rigidly secured in suitably known manner by any desired known means such as screws, bolts, studs or the like (not shown) in suitable desired spaced relation above the press table 38.

The operation of the setting means is as follows: a hook member 25 is secured in the upper die member 41 and a backing plate member 32 seated or nested in the lower die assembly 40 as hereinafter described; the garment is brought over the backing plate member 32 and exactly located as, and by means, hereinafter described and one downward reciprocatory stroke of the plunger is effected to cause prongs 30 to penetrate the garment material and pass through the apertures 33 of the backing plate 32 (Fig. 12) whereupon or immediately whereafter the operation of the lower die assembly or unit continues to bend or clinch the prongs 30 with the parts under compression and bring the parts to the position of Fig. 13. Pressure is then released by upward movement of the upper die unit 41 and the hook unit 25, 32 or 24 is moved out of and freed from the upper die unit 41 and the garment with attached hook 24 (or 25, 32) replaced by another garment to which a hook unit is to be attached.

In order to facilitate exact location of the garment portion such as ap 22 with respect to complementary die members 4t) and 41 for securing precise location of the hook unit 25, 32 in the garment, a gauge is provided comprising a sheet-like member 43 preferably formed of Lucite or other suitable plastic or other relatively transparent material of like properties. This gauge is normally supported in elevated, tilted position as shown in dot` and dash lines in Fig. 3 to provide full access to the portions of thevwork supporting plate, and especially portions surrounding the zone of operation of dies 40, 41. The yielding support of the gauge 43 is such that after members 25 and 32 have been seated in the dies 40, 41 as described above, the garment material 22 may be placed over the member 32 and the gauge 43 drawn or pushed down by the operator to the full line position of Fig. 3, where it covers and smoothes the flap or other garment material surrounding the die operating zone (see also Fig. 6). The gauge member acts as a guard to keep the operators fingers out of the danger zone and is so constructed that portions thereof engage parts of the uncompleted garment flap 22, for instance, in order to insure precise placement of the fastener unit 25, 32 thereon.

This locating means comprises indicia in the form of a scoring or line 44 extending transversely of the gauge 43 such as, for instance, which may be formed by a groove in the lower side of the Lucite sheet and filled with black or other readily visible pigment. This scoring or line 44 leads into the forward corner of an open sided rectangular notch or opening 45 forwardly of which is a finger 46 of predetermined length such that when its outer end engages the outer ends or noses of the slide fastener elements or scoops 47 on the left hand Stringer tape 48 of the Zipper secured to the flap 22, the flap portion is approximately located with respect to the zipper line. This Stringer tape is secured by stitching 49, 50 to the black ily piece 51 of the garment (Fig. 6) and the scoring or line 44 overlies and is aligned with the seam between the black fly piece 51 and attached front trunk piece 52, when the waistband 53 and flap portion 22 are in the exact transverse location for placement of the parts 25, 32 thereon as shown in Figs. l2 and 13.

After the unit 24 comprising members 25 and 32 is attached as shown in Fig. 6, the garment ap portion 22 is folded along the seam 55 connecting the black fly piece 51 and front trunk portion or piece 52 and the flap or ily portion is nished by attachment of the waistband lining 53a, etc. When this is done, the backing plate 32 and recessed prong portions 30b will be disposed between overlapping layers of the waistband 53 adjacent the y opening of the garment. The fore-andaft closed edge surface portion of the notch or opening 45 is inclined at 45a to facilitate alignment with the seam 55 which should occur approximately with engagement of the finger 46 with the scoops 47. If the garment is inaccurately assembled, however, before the incomplete garment reaches the device, the operator will use the edge of the inclined portion 45a in alignment with the seam 55 for precise and exact placement of the hook unit along the waistband as lierebefore pointed out.

The means for supporting the gauge 45, normally in the dot and dash position of Fig. 3 and f or manual placement in the full line position comprises spring hinge means formed by a pair of similar membersor units each of which comprises a plate-like arm 57 having its forward end secured by any suitable means such as rivets 58 to the rear edge of the gauge plate 43, the rear corner portions of the arms 57 being turned down to form ears 59 provided with apertures supported on a pivot pin 60. The pivot pin 60 is supported by a bracket 61 having therein a slot 62 adapted to straddle the work support plate 42 to which it may be firmly secured in lateral and fore-andaft adjustment by a thumb screw 63. A fiat biasing spring member 64 of desired stiffness is provided at it rear end with an aperture through which a screw 65 extends to secure it to the bracket 61 with its forward end disposed beneath the arm 57 as shown in Fig. 3.

As will be readily understood, by loosening the thumb screws 63, the brackets 61 may be adjusted laterally or fore-arid-aft with respect to the work supporting p late 42 whereby corresponding adjustment of the inclined surface 45a, finger 46 and indicia, line or scoring 44 with respect to the dies 40 and 41 may be made.

The upper die or die unit 41 is of extremely simple form comprising a block 66 having therein a transverse inclined slot 67 leading from the front'and extending partway therethrough which slot' 67 slidably receives and loosely supports the bill portion 28 and bend portion 27 of each hook member 25 which is slipped therein manually. The portion 68 extending below the slot 67 in complementary with the space or clearance between portions 26 and 28 of the hook member and provides a seat for the ear or lip portion 29 so that downward thrust transmitted through the block 66 is transmitted to the base porion 26, ear or lip portion 29 and prongs 3i) as shown in Figs. 4, 5 and 12 to compress the garment material beneath portions 26 and 29 before the prongs 30 are folded over firmly at 30b. A shank 69 extends Y6 from the upper end of the block 66 for detachable con'- nection to the press plunger in any suitable known manner; for instance, as shown in Fig. 3.

Because of the particular construction and operation of the lower die unit 40 as shown in Figs. 3 and 7-13, the setting operation performed by the device is accompanied by stretching and compression of the garment or other material disposed between the hook and backing plate members 2S and 32, the firm bending over of the prong end portions 30b through a right angle into recesses 34, locking of these prong portions 3011 in that position by lugs 35 for retention of the above described compression, and also enhancement or increase of the compression of the garment or other material and resistance to skidding or sliding by bending of the lugs 35 from the position of Fig. l2 upwardly beyond the plane of the backing plate 32 substantially to the position of Fig. 13.

As shown in Figs. 7-11 inclusive, the lower die assembly or unit 40 comprises a block-like housing unit 70 formed by a pair of generally U-shaped obverse, opposed block members 71 and 72 with a spacer block member 73 rigidly secured therebetween 4in suitable manner as by suitably located aligned bores and studs 74 to form the aforesaid block-like unit 70. This unit 70 is secured in a rectangular aperture 75 (Figs. 7-10) provided in the work supporting plate 42 by brackets 76 riveted or otherwise secured to the underside of the plate member 42 (Fig. 3) for a relatively slight degree of reciprocation for a purpose which will hereinafter appear.

Between the central portions of the block members 71 and 72 is a recess of rectangular section (Figs. 9 and l0) in which is disposed a hollow block 77 with its lower end adapted to rest upon the press table 38 and surrounded by a spring supporting member 78 also resting upon the aforesaid table (Fig. 3). This spring supporting member 78 supports a plurality of compression springs 79 having their upper ends in engagement with the block-like housing 70 formed by the rigidly connected block members 71, 72, 73 (Figs. 3, 9 and 1l) whereby the housing 70 is supported yieldingly above the spring supporting member 78. The hollow block 77 and housing 70 are relatively slidable and the block 77 is provided with a pair of spaced apertured ears 80 to which a pair of links 82 are pivotally connected by means of pivot pins 81. Each of the links 82 is apertured at its opposite (upper) end and supported by a cross-pin 83. This cross-pin 83 also ex tends through an aperture in the upper end of a prong bending link 84 which has its lower end free and resting slidably upon the upper surface. of the block 77 (Fig. 10). The cross-pins 83 are each supported at one end in a horizontal slot 85 in the inner side wall of one of the blocks 71 or 72 and at the opposite (inner) end by a similar obverse aligned horizontal slot 86 in the wall of the block member 73 (Figs. 9 arid l0) whereby the inclined upper surface of link 84 which engages a prong 30 of the hook member 25 between the positions of Figs. l2 and 13 presents a changing bending of the prong through a precise ninety degree angle.

A generally trapezoidal proiection 87 simultaneously engages a locking lug 35 and bends it from the position of Fig. l2 to that of Fig. 13 with the results and advantages described above.

As shown particularlv in Figs. 7, 9 and ll the top surface of the unit 70 formed by the block members 71, 72. 73 is provided with a pair of parallel grooves or channels 88 and 89 coextensive therewith which, with a cutout portion 90 Ain the upper surface portion of the block member 73, form aseat or nest receiving and supporting the backing plate member 32 firmly as shown in Figs. l2 and 13, during the setting operation.

For setting the hook unit 25a, 32a of Figs. 16 and 17 a modiiied form of lower die unit may be substituted for the unit 40 which, however, incorporates the same general principles and mode of operation as the unit. For instance, the block 77 may be provided with an additional ear at the top end opposite the ears 80 and provided with an additional linkage 81, 82, 83, 84 similar to those shown, with an additional guideway (corresponding with those provided by the pairs of slots ,85, 86.) for -the :cross-pins .83. The .prong bending ,link -84 need not be .provided with .a projection 87 unless the aperture 36 .be provided with a glug tsuch `-as 55 which, -of course, is contemplated in certain `cases :and under ycertain conditions. .As will be ,readily lunderstood from .the direction ,-in which the Vrecess 37 extends, .the Vthird prong third Y or added) w1ll be bent lin a `d1- .rection opposite that in whichzthe .prongs 30 are'bent.

lt is, of zcourse, to :be understood that ,the above description is `merely illustrative and in nowise .limiting and zthat l desire `to Icomprehend within my 4invention .such ,modifications V'as are included in the scope of -the following claims.

I :claim:

,1. ,method of attaching .to ,a garment or Ythe like :a staple type fastener lunit comprising a hook memfber including a .planar base Aportion with a plurality of integral prongs extending rearwardly :therefrom and an ear portion ,rearwardly `inclined .at Va slight angle from vthe base portion thereof, Aand ,a complementary substantially ,planar ybacking plate member provided with apertures aligned ywith said Aprongs and depending lug ,members adjacent .fat least one'of the apertures staggered .with respect l.to said vear portion, 'which comprises: arranging la hook member and a backing plate member `in :alignment at opposite sides of at least one llayer of garment Imaterial in a Apredetermined location, driving `the prongs of said fhook member `,through said material `and -the zaligned apertures while impressing between said .hook member base portion and said backingplate member suiiicient force to compress the material therebetween, Jlocking the prong lend portions tightly over the lbackof said backing-plate member while said compressive .force Ais impressed in said tgarment material vto :retain said -compressive force therein to effect subsequent wide dis- :tribution ytherethrough .of transverse stresses applied to said hook unit, and ben-ding said lug members forwardly 1in .opposition to the rearward inclination ,of said ear portion simultaneously with the prong bending -to lock ,thetprongs in a clinched ,-position.

2. A method as defined in laim -.1 vwherein said `ear portion of said hook member is provided with .an integral `rearwardly extending prong and said backing yplate .member is provided .with 'an -aligned `aperture, .the steps .of rprojecting said prong through said garment `material tand said aperture and clinching the end thereof over Vthe -rear surface for" said vbacking plate member in a tdirection `opposite lthe extent of the other prong end `portions simultaneouslyfwith locking .of said other prongs.

3, A staple `type garment fastener unit setting attachment for a `press with a stationary table and :a plunger reciprocable toward 'and from said table, said fastener units each comprising a 4fastener member with rearwardly projecting prongs and a complementary :backing plate lwith apertures for receiving said prongs, said .attachment comprisingastationary worksupporting plate attachable above the table of 'said press, a lower l,die unit .associated with said work supporting :plate vfor .supporting a `backing lplate below ya garment portion supported thereon, an upper die Aunit secured Kto said `p1,'.ess..plunger-tor supporting a prong bearing member Ywith the prongs `thereof aligned with `the apertures of 'said backing plate for driving of said prong bearing member downwardly for penetration of said fprongs Ythrough Ythe garment `portion and through said backing :plate apertures, and :gauge means for locating said .garment .portion on said Ywork supporting plate comprising an adjustable transparent gauge ,plate hinged vto the rear end portion of said wor-k supporting plate, said transparent plate having Ian 4aperture therein for accommodating 4cooperation of said upper :and lower die units therethrough when said transparent plate is in smoothing engagement with .a vgarment portion therebeneath on said work supporting plate.

4. A staple type garment fastener unit setting attachment as detined in .claim ,3, .said lower die .unit including a double linkage comprising two links pivotally connected by a pin constrained to move in a substantially horizontal direction, one of said links presenting a con- :stantly changing `inclined .surface to exert a compound bending force on each prong.

5. A fastener unit setting attachment as defined in claim 4, said prong Abearing fastener member having an ear portion between a -pair .of said prongs inclined rearwardly at a shght .angle from the general extent of the garment portion engaging surface thereof, and said bacrlliing plate apertures having lugs lassociated therewit 6. A staple type garment hook and eye fastener unit setting attachment for a l`press with a stationary table and a plunger reciprocable toward and from said table, said vfastener .units each comprising a hook member lhaving a plate-like base portion -with a plurality of integral rearwardly extending prongs anda backing plate member having apertures adapted to receive intermediate portions of said prongs when the unit is set with the members at opposite sides of a garment portion and with the prong ends clinched over the back of said backing plate member, said attachmentcomprising `a stationary work Asupporting plate attachable to the table of said press, a lower die unit associated with said work supporting plate and supported by said table for supporting ya backing plate member below garment material supported on said plate, an upper die unit secured to sa-id press plunger for detachably supporting a hook member with the prongs thereof aligned with the apertures of said backing plate for .driving said hook member downward for penetration of said prongs through .the garment material and through said backing plate apertures, a double linkage comprising two links pivotally connected by a pin constrained to move in a substantially horlzontal direction, one of said links presenting a constantly changing inclined surface to exert a compound bending force on each prong.

7. A garment .fastener unit setting lattachment as defined in claim 6, said lower :die .unit including a housing yieldingly supported from said A.press .table and having a recess in the upper surface thereof for nesting said backing plate, and a block rigidly supported by said press table supporting a plurality of linkages each presenting compound bending force to one of said prongs during its descent through an aperture .of said backing i plate. will References Cited ,in the iileof this patent UNITED STATES PATENTS Number Name Date 200,774 Somers Feb. 26, 1878 1,846,007 Levine Feb. 16, 1932 2,345,103 Dietz Mar. 28, 1944 2,431,033 yGalper Nov. 1S, 1947 FOREIGN PATENTS Number Country -Date 462,957 .Great Britain Mar. 18, 1937 

